Air quality monitor



FIG. 1 illustrates a perspective view of an air quality monitor;

FIG. 2 illustrates a front elevation view thereof;

FIG. 3 illustrates a back elevation view thereof;

FIG. 4 illustrates a side elevation view thereof;

FIG. 5 illustrates a side elevation view thereof;

FIG. 6 illustrates a top plan view thereof; and,

FIG. 7 illustrates a bottom plan view thereof. 

CLAIM The ornamental design for an air quality monitor, as shown and described. 